Originally conceived as a radio transmitting tube in the 1930's, the HY69 offers significant sonic benefits as well as a striking visual display due to its brilliantly lit Tungsten filament/cathode. Only produced by one manufacturer for a relatively short period of time, the HY69 is extremely difficult to find today and rarely used in audio amplifiers.

In addition, the Anniversary Edition amplifier takes advantage of the superb sonic richness of another relatively obscure triode tube, the 56, in its front end amplification stages.

Finally, the OMA signature dovetailed walnut casework is joined with antiqued copper components for a look that is at once classic and captivating.